Hand Auger/ T-Auger
Hand Augers are the old school version of auger bits in power drills. They're surprisingly efficient when properly sharpened.
When roughing out the tube for a shrink pot, a hand auger is very useful in removing a majority of the waste on the interior. It also creates an excavation channel for the rest of the waste material when switching over to a mallet and gouge.
These tools can also be used for innumerable boring projects, and work quite well with large diameter boring, as the T- shaped handle allows for a great deal of torque to be applied in a very controlled manner.